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<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>onseeking — dynamic handler</title>

  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}video{display:block;max-width:100%;border-radius:8px;margin-bottom:.75rem}#log{padding:.75rem 1rem;border-radius:8px;font-size:.875rem;max-width:420px;background:#f1f5f9;border:1px solid #e2e8f0;color:#475569}</style>

</head>

<body>

  <h1>dynamicVideo.onseeking</h1>

  <p>Move the seek bar — the log updates when seeking starts.</p>



  <video id=dynamicVideo controls width=320>

    <source src=/video/count.mp4 type=video/mp4>

    Your browser does not support the video tag.

  </video>

  <div id=log>Waiting for seek…</div>



  <script>function handleDynamicSeeking(){document.getElementById("log").textContent="Seeking event detected!",document.getElementById("log").style.background="#fef3c7",document.getElementById("log").style.borderColor="#fde68a",document.getElementById("log").style.color="#92400e"}document.getElementById("dynamicVideo").onseeking=handleDynamicSeeking</script>

</body>

</html>

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HTML onseeking Attribute — dynamic handler